Best sun protection for Desafío Galayos 2026

June in Sierra de Gredos: intense sun and high exposure on the ridges.

Topical sun protection products specific to trail running: SPF 50+ sport sunscreen resistant to water and sweat, SPF lip balm and after-sun for recovery. At altitude, UV radiation increases by 10-12% per 1,000 metres, making sun protection not an extra but mandatory gear.

Recommended products

ISDIN

Race pick

ISDIN Fotoprotector Fusion Water SPF 50+

Ultralight water-phase facial sunscreen with SPF 50+. Fluid texture that absorbs instantly with no greasy residue, ideal for applying during a race. Water and sweat resistant.

Strengths

+Ultralight texture, feels invisible on skin
+Sweat and water resistant
+Instant absorption, ideal for mid-race reapplication
+SPF 50+ with UVA/UVB protection

Watch out for

−Small format (50 ml), may run short on ultras
−Higher price than conventional sunscreens

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Piz Buin

Race pick

Piz Buin Mountain SPF 50+

Mountain sunscreen with SPF 50+ formulated for extreme altitude conditions. Extra protection against intensified UV radiation and cold wind. Rich texture that protects skin from dehydration.

Strengths

+Specifically formulated for altitude and cold
+Protects against wind, snow and sun simultaneously
+Good value for money
+Available in compact 20 ml format for backpack

Watch out for

−Thicker texture, takes longer to absorb
−May leave white residue on darker skin

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Sun Bum

Race pick

Sun Bum Sunscreen Lip Balm SPF 30

Lip balm with SPF 30 sun protection in stick format. Moisturises and protects lips from sunburn, a spot many runners forget. Coconut flavour, paraben-free.

Strengths